Question

A point object is placed at a distance of 20 cm from a convex mirror of focal length 20 cm. The image will form at:​

Answer 1

Answer:

Ray Optics

Explanation:

★ Given ;

Object Distance ( U ) = -20 cm

Focal length of Convex mirror ( F ) = + 20 cm

Image distance ( V ) = ???

----------------------------------- [ BY MIRROR FORMULA ] --------------------------------------

1 / V + 1 / U = 1 / F

» 1 / V + [ - ( 1 / 20 ) ] = + ( 1 / 20 )

» 1 / V = ( 1 / 20 ) + ( 1 / 20 )

» 1 / V = 2 / 20

★ V = + 10 cm

ANSWER :- hence ; image distance from mirror is 10 cm .